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England · Local authority

Welwyn Hatfield Borough Council
Planning applications.

Explore collected planning applications and decisions for Welwyn Hatfield Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates
19,539Searchable applications
298Recorded as pending
86%Approval rate · 15,788 approved or refused records
2,200Refused applications

13,588 approved · 2,200 refused · 989 withdrawn. Received dates in our records: 5 Jan 2005 to 30 Sept 2026. Most recent record check: 12 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026
Planning information Planning and buildingLocal plan Our Local PlanPre-application advice Pre-application advice (planning applications)Conservation areas Schedule of properties removed from the Welwyn Conservation AreaArticle 4 directions Article 4 Directions

Conservation areas and Article 4 directions

Explore published planning boundaries and follow their source records for designation details. Coverage varies: an empty map does not mean there are no restrictions. Check the council’s current maps and documents before relying on a boundary.

Conservation areas9 mapped area records
Article 4 direction areasNo boundary records available in this collection

Interactive planning map loads with JavaScript. Dataset sources are linked below.

Download Article 4 coverage for all authorities (CSV)

Data downloaded 14 Sept 2026. Display boundaries are simplified and indicative. Map record counts are not a complete count of designations or directions.

Sources: Planning Data conservation areas and Article 4 direction areas. Contains public sector information licensed under the Open Government Licence v3.0.

More application records

  1. Decided - Granted6/2018/1215/FULL

    Change of use of two areas of land from amenity to residential/garden land

    2 Templewood Welwyn Garden City AL8 7HX

    Received 9 May 2018
  2. Decided - Granted6/2023/0458/HOUSE

    Replacement of pitched polycarbonate conservatory roof with flat roof

    80 Birchwood Avenue Hatfield AL10 0PS

    Received 28 Feb 2023
  3. Decided - Granted6/2019/1119/COND

    Submission of details pursuant to condition 6 (Lighting) on planning application 6/2018/2809/MAJ

    Queen Elizabeth II Hospital Howlands Welwyn Garden City AL7 4HQ

    Received 9 May 2019
  4. Decided - Granted6/2025/2559/LAWP

    Certificate of lawfulness for rear dormer by way of hip to gable conversion with rooflights on front slope

    3 Cecil Crescent Hatfield AL10 0HF

    Received 12 Dec 2025
  5. Decided6/2021/0939/TC

    Reduce 1 x Fir tree & 1 x sycamore tree by 50% covered by conservation area

    31 Colgrove Welwyn Garden City AL8 6HY

    Received 23 Mar 2021
  6. Decided - Granted6/2020/2169/COND

    Submission of details pursuant to condition 6 (cycle storage details) on planning permission 6/2019/1067/MAJ

    Hill-Top Neighbourhood Centre High View Hatfield AL10 8HZ

    Received 26 Aug 2020
  7. Decided - Granted6/2021/0195/EMT

    Oak - reduce by 30%

    8 Hillside Welwyn Garden City AL7 4PZ

    Received 21 Jan 2021
  8. Decided - Granted6/2020/0259/HOUSE

    Erection of a single storey rear extension, and formation of pitch roof over entrance area and garage

    19 Tolmers Gardens Cuffley Potters Bar EN6 4JE

    Received 29 Jan 2020
  9. Decided6/2025/1920/TC

    Oak to fell.

    4 Densley Close Welwyn Garden City AL8 7JX

    Received 8 Sept 2025
  10. Decided - Granted6/2025/0866/EMT

    2 x Cherry Plums in rear garden to be removed as they are covered with ganoderma fungus and are liable to fail/fall

    18 Fordwich Road Welwyn Garden City AL8 6EY

    Received 9 May 2025
  11. Decided6/2024/1278/TC

    Fell 1 x oak tree

    347 Knightsfield Welwyn Garden City AL8 7NB

    Received 8 Jul 2024
  12. Decided - Granted6/2024/0744/HOUSE

    Erection of a double storey rear extension, floor side extension, replacement porch, installation of roof lights to facilitate a loft conversion, conversion of attached garage and alterations to the garage roof, alterations to existing openings

    14 Guessens Road Welwyn Garden City AL8 6QR

    Received 22 Apr 2024
  13. Decided - Granted6/2020/0624/HOUSE

    Erection of single storey front extension and part single, part two storey rear extension.

    18 Pleasant Rise Hatfield AL9 5DS

    Received 4 Mar 2020
  14. Decided - Granted6/2019/3024/MAJ

    Demolition of office building and erection of 128 flats with associated car parking, landscaping, amenity space, bin and cycle storage, with alterations to existing and formation of new access on Broadwater Road and alterations to the existing access on Broad Court.

    29 Broadwater Road Welwyn Garden City AL7 3BQ

    Received 29 Nov 2019
  15. Decided - Granted6/2019/0171/HOUSE

    Erection of a single storey side and rear extension and conversion of existing garage into habitable accommodation

    1A Marlborough Close Welwyn AL6 0UG

    Received 28 Jan 2019
  16. Decided6/2025/1962/TC

    2x 70ft leylandii conifers to reduce in height by 40% 1x 20ft conifer to remove

    24 Sheepcote Welwyn Garden City AL7 4QD

    Received 12 Sept 2025
  17. Decided - Granted6/2021/1325/HOUSE

    New pitched roof to existing flat roof extension

    4 St Marys Close Welwyn AL6 9RL

    Received 23 Apr 2021
  18. Decided - Granted6/2024/1932/VAR

    Variation of condition 2 (sliding gate) on planning permission 6/2022/1894/HOUSE

    18 St Albans Road East Hatfield AL10 0EH

    Received 9 Oct 2024
  19. Decided - Granted6/2023/2427/PN8

    Prior approval for the erection of a single storey rear extension with roof light windows measuring 8m in depth, 4m in height and 3m to the eaves

    24 Fulling Mill Lane Welwyn AL6 9NS

    Received 4 Dec 2023
  20. Decided - Granted6/2024/1628/HOUSE

    Erection of single storey side and rear extension following the demolition of the existing conservatory

    3 West Mead Welwyn Garden City AL7 4SA

    Received 27 Aug 2024
  21. Decided - Granted6/2021/0588/HOUSE

    First floor side and part rear extension, partial conversion to garage and alterations to openings on existing side and rear elevations, to include insertion of 2 sets of rear facing bi-folding doors and insertion of roof light to existing flat roof. Landscaping including hard paving to front, side and rear gardens.

    22 The Chase Welwyn AL6 0QT

    Received 24 Feb 2021
  22. Decided - Refused6/2020/0329/HOUSE

    Erection of a single storey front and rear extension, and a first floor extension

    14 Reynards Road Welwyn AL6 9TP

    Received 5 Feb 2020
  23. Decided - Granted6/2022/1556/HOUSE

    Erection of rear/side extension

    41 Hunters Way Welwyn Garden City Hertfordshire AL7 4NR

    Received 4 Jul 2022
  24. Decided - Refused6/2025/0451/PN8

    Prior approval for the erection of a single storey rear extension measuring 3.10m in height, 4.50m in depth and 2.5m to the eaves

    14 Gorse Close Hatfield AL10 9DW

    Received 11 Mar 2025

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Researching a proposal in Welwyn Hatfield Borough Council

Start with the address or application reference. Open a record to read the proposal, dates and available documents, then check the official register for the latest plans and consultation details. If nothing appears, check coverage before treating the result as a complete planning history.

How to search planning applications

Guides to planning records

All planning guides

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    Planning application documents: what to read first

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  • Understanding planning · 13 min read

    Planning permission drawings: how to read plans

    Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.

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  • Property research · 13 min read

    Planning approval rates: how to read council statistics

    Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.

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What these statistics cover

These figures describe applications collected by PlanningTrack for Welwyn Hatfield Borough Council, across all dates currently available. They are a partial dataset, rather than an authority-wide performance measure. The date range does not establish continuous historical coverage.

The approval percentage is approved records divided by approved plus refused records. Pending, withdrawn and unknown outcomes are excluded. No percentage is shown until there is an approved or refused record.

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